Stackable histiocyte filter screen

The utility model discloses a stackable histiocyte filter screen which comprises an upper frame and a lower frame, a support frame is fixedly arranged between the upper frame and the lower frame, two sides of the support frame and two sides of the inner wall of the lower frame are provided with slots, and three hollow areas are formed among the upper frame, the lower frame and the support frame; the convection hole is formed in the inner side of the upper frame, and a protruding block is arranged in the middle of the convection hole; the side screen is arranged between the supporting frames, fixing blocks are fixedly arranged on the two sides of the side screen, and first inserting blocks are slidably mounted on one sides of the fixing blocks; the bottom screen is arranged at the bottom of the lower frame, a fixing ring is fixedly arranged outside the bottom screen, second inserting blocks are slidably installed on the two sides of the fixing ring, and the problems that a cell filter screen cannot meet the re